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Laser Diode Housing from Hardware Store Parts

Laser Diode Housing, MacGyver'ed

Laser Diode Housing, MacGyver'ed. The focus is not THAT horrible, the camera picked up too much splatter.

I never seem to be able to finish my laser engraver/cutter from broken DVD-RW drives project (inspired by Groover’s pocket laser engraver) because I keep opening new DVD drives and keep finding reasons to go on tangent mini-projects. Most of those mini-projects are brought about by my admiration of the amount of useful parts a DVDs has (even a broken one, apparently) and some are caused by specific challenges each new opened drive brings. So, at some point I opened an HP SDVD8821H DVD R/RW/RAM Drive and found this laser diode inside:

Laser diode on a chip with PD arrays (front)

Laser diode on a chip with PD arrays (front)

Laser diode on a chip with PD arrays (back)

Laser diode on a chip with PD arrays (back)

It’s a weird looking laser diode (LD) that is mounted in the same case with the photodiode arrays which makes for simplified optics but I did not have any housing for this shape/size diode. By the way, if anyone reading this knows a professionally made housing for this type of LD, please post a comment with the reference, I would greatly appreciate that. The diode is just slightly smaller than your more standard 9mm LD – it’s smaller diameter is 6.50mm and the larger diameter is 8.25mm so it fits neither 5.6mm nor 9mm standard size housings.
This made me think that I may not be the only one stuck without a proper housing for a laser diode and I decided to see what it would take to build a housing for a laser diode out of parts available only in the disassembled drive itself and in a local hardware store. Here is what came out
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Recent Comments
  • admin: How did you measure the 225mA output? Did you connect 4 diodes (regular rectifier diodes, not laser of course)...
  • David: Hello. I have extracted a 5.6mm diode from a 16x DL dvd burner, I already have an AiXiz module and driver...
  • admin: Thank you for stopping by, Mark! If you are using the same hardware, just be sure to not overload the driver...
  • Mark N: Spot on. exactly what I want. Just a fwd/Rev speed control, stepper motor to drive the X axis on my Milling...
  • admin: That’s right – R4 pulls the Enable input of the chip down, and the driver will be off until...
  • Nate: I have a question on the R3/R4 and ttl. So you say that if R4 is installed its normally off. So the laser is...
  • admin: Thanks for stopping by, Tom. I don’t have a ready-made DXF but the Eagle board file attached above in...
  • admin: It does need to be on a ferrous material for a great increase in performance. Although I do believe you can...
  • Tom Batya: I know were you can get about 83 of these for $2.00 EA can you send me a DXF of the foil pattern of your...
  • Mayank: is it necessary to fix magnet on ferrous metal or it can also be fix on non ferrous metal.
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